1 /*
2 * hostapd / main()
3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "utils/includes.h"
16 #ifndef CONFIG_NATIVE_WINDOWS
17 #include <syslog.h>
18 #endif /* CONFIG_NATIVE_WINDOWS */
19
20 #include "utils/common.h"
21 #include "utils/eloop.h"
22 #include "crypto/tls.h"
23 #include "common/version.h"
24 #include "drivers/driver.h"
25 #include "eap_server/eap.h"
26 #include "eap_server/tncs.h"
27 #include "ap/hostapd.h"
28 #include "ap/ap_config.h"
29 #include "config_file.h"
30 #include "eap_register.h"
31 #include "dump_state.h"
32 #include "ctrl_iface.h"
33
34
35 extern int wpa_debug_level;
36 extern int wpa_debug_show_keys;
37 extern int wpa_debug_timestamp;
38
39
40 struct hapd_interfaces {
41 size_t count;
42 struct hostapd_iface **iface;
43 };
44
45
hostapd_for_each_interface(struct hapd_interfaces * interfaces,int (* cb)(struct hostapd_iface * iface,void * ctx),void * ctx)46 static int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
47 int (*cb)(struct hostapd_iface *iface,
48 void *ctx), void *ctx)
49 {
50 size_t i;
51 int ret;
52
53 for (i = 0; i < interfaces->count; i++) {
54 ret = cb(interfaces->iface[i], ctx);
55 if (ret)
56 return ret;
57 }
58
59 return 0;
60 }
61
62
63 #ifndef CONFIG_NO_HOSTAPD_LOGGER
hostapd_logger_cb(void * ctx,const u8 * addr,unsigned int module,int level,const char * txt,size_t len)64 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
65 int level, const char *txt, size_t len)
66 {
67 struct hostapd_data *hapd = ctx;
68 char *format, *module_str;
69 int maxlen;
70 int conf_syslog_level, conf_stdout_level;
71 unsigned int conf_syslog, conf_stdout;
72
73 maxlen = len + 100;
74 format = os_malloc(maxlen);
75 if (!format)
76 return;
77
78 if (hapd && hapd->conf) {
79 conf_syslog_level = hapd->conf->logger_syslog_level;
80 conf_stdout_level = hapd->conf->logger_stdout_level;
81 conf_syslog = hapd->conf->logger_syslog;
82 conf_stdout = hapd->conf->logger_stdout;
83 } else {
84 conf_syslog_level = conf_stdout_level = 0;
85 conf_syslog = conf_stdout = (unsigned int) -1;
86 }
87
88 switch (module) {
89 case HOSTAPD_MODULE_IEEE80211:
90 module_str = "IEEE 802.11";
91 break;
92 case HOSTAPD_MODULE_IEEE8021X:
93 module_str = "IEEE 802.1X";
94 break;
95 case HOSTAPD_MODULE_RADIUS:
96 module_str = "RADIUS";
97 break;
98 case HOSTAPD_MODULE_WPA:
99 module_str = "WPA";
100 break;
101 case HOSTAPD_MODULE_DRIVER:
102 module_str = "DRIVER";
103 break;
104 case HOSTAPD_MODULE_IAPP:
105 module_str = "IAPP";
106 break;
107 case HOSTAPD_MODULE_MLME:
108 module_str = "MLME";
109 break;
110 default:
111 module_str = NULL;
112 break;
113 }
114
115 if (hapd && hapd->conf && addr)
116 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
117 hapd->conf->iface, MAC2STR(addr),
118 module_str ? " " : "", module_str, txt);
119 else if (hapd && hapd->conf)
120 os_snprintf(format, maxlen, "%s:%s%s %s",
121 hapd->conf->iface, module_str ? " " : "",
122 module_str, txt);
123 else if (addr)
124 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
125 MAC2STR(addr), module_str ? " " : "",
126 module_str, txt);
127 else
128 os_snprintf(format, maxlen, "%s%s%s",
129 module_str, module_str ? ": " : "", txt);
130
131 if ((conf_stdout & module) && level >= conf_stdout_level) {
132 wpa_debug_print_timestamp();
133 printf("%s\n", format);
134 }
135
136 #ifndef CONFIG_NATIVE_WINDOWS
137 if ((conf_syslog & module) && level >= conf_syslog_level) {
138 int priority;
139 switch (level) {
140 case HOSTAPD_LEVEL_DEBUG_VERBOSE:
141 case HOSTAPD_LEVEL_DEBUG:
142 priority = LOG_DEBUG;
143 break;
144 case HOSTAPD_LEVEL_INFO:
145 priority = LOG_INFO;
146 break;
147 case HOSTAPD_LEVEL_NOTICE:
148 priority = LOG_NOTICE;
149 break;
150 case HOSTAPD_LEVEL_WARNING:
151 priority = LOG_WARNING;
152 break;
153 default:
154 priority = LOG_INFO;
155 break;
156 }
157 syslog(priority, "%s", format);
158 }
159 #endif /* CONFIG_NATIVE_WINDOWS */
160
161 os_free(format);
162 }
163 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
164
165
166 /**
167 * hostapd_init - Allocate and initialize per-interface data
168 * @config_file: Path to the configuration file
169 * Returns: Pointer to the allocated interface data or %NULL on failure
170 *
171 * This function is used to allocate main data structures for per-interface
172 * data. The allocated data buffer will be freed by calling
173 * hostapd_cleanup_iface().
174 */
hostapd_init(const char * config_file)175 static struct hostapd_iface * hostapd_init(const char *config_file)
176 {
177 struct hostapd_iface *hapd_iface = NULL;
178 struct hostapd_config *conf = NULL;
179 struct hostapd_data *hapd;
180 size_t i;
181
182 hapd_iface = os_zalloc(sizeof(*hapd_iface));
183 if (hapd_iface == NULL)
184 goto fail;
185
186 hapd_iface->reload_config = hostapd_reload_config;
187 hapd_iface->config_read_cb = hostapd_config_read;
188 hapd_iface->config_fname = os_strdup(config_file);
189 if (hapd_iface->config_fname == NULL)
190 goto fail;
191 hapd_iface->ctrl_iface_init = hostapd_ctrl_iface_init;
192 hapd_iface->ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
193 hapd_iface->for_each_interface = hostapd_for_each_interface;
194
195 conf = hostapd_config_read(hapd_iface->config_fname);
196 if (conf == NULL)
197 goto fail;
198 hapd_iface->conf = conf;
199
200 hapd_iface->num_bss = conf->num_bss;
201 hapd_iface->bss = os_zalloc(conf->num_bss *
202 sizeof(struct hostapd_data *));
203 if (hapd_iface->bss == NULL)
204 goto fail;
205
206 for (i = 0; i < conf->num_bss; i++) {
207 hapd = hapd_iface->bss[i] =
208 hostapd_alloc_bss_data(hapd_iface, conf,
209 &conf->bss[i]);
210 if (hapd == NULL)
211 goto fail;
212 hapd->msg_ctx = hapd;
213 }
214
215 return hapd_iface;
216
217 fail:
218 if (conf)
219 hostapd_config_free(conf);
220 if (hapd_iface) {
221 os_free(hapd_iface->config_fname);
222 os_free(hapd_iface->bss);
223 os_free(hapd_iface);
224 }
225 return NULL;
226 }
227
228
hostapd_driver_init(struct hostapd_iface * iface)229 static int hostapd_driver_init(struct hostapd_iface *iface)
230 {
231 struct wpa_init_params params;
232 size_t i;
233 struct hostapd_data *hapd = iface->bss[0];
234 struct hostapd_bss_config *conf = hapd->conf;
235 u8 *b = conf->bssid;
236
237 if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) {
238 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available");
239 return -1;
240 }
241
242 /* Initialize the driver interface */
243 if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5]))
244 b = NULL;
245
246 os_memset(¶ms, 0, sizeof(params));
247 params.bssid = b;
248 params.ifname = hapd->conf->iface;
249 params.ssid = (const u8 *) hapd->conf->ssid.ssid;
250 params.ssid_len = hapd->conf->ssid.ssid_len;
251 params.test_socket = hapd->conf->test_socket;
252 params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
253
254 params.num_bridge = hapd->iface->num_bss;
255 params.bridge = os_zalloc(hapd->iface->num_bss * sizeof(char *));
256 if (params.bridge == NULL)
257 return -1;
258 for (i = 0; i < hapd->iface->num_bss; i++) {
259 struct hostapd_data *bss = hapd->iface->bss[i];
260 if (bss->conf->bridge[0])
261 params.bridge[i] = bss->conf->bridge;
262 }
263
264 params.own_addr = hapd->own_addr;
265
266 hapd->drv_priv = hapd->driver->hapd_init(hapd, ¶ms);
267 os_free(params.bridge);
268 if (hapd->drv_priv == NULL) {
269 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
270 hapd->driver->name);
271 hapd->driver = NULL;
272 return -1;
273 }
274
275 return 0;
276 }
277
278
hostapd_interface_deinit_free(struct hostapd_iface * iface)279 static void hostapd_interface_deinit_free(struct hostapd_iface *iface)
280 {
281 const struct wpa_driver_ops *driver;
282 void *drv_priv;
283 if (iface == NULL)
284 return;
285 driver = iface->bss[0]->driver;
286 drv_priv = iface->bss[0]->drv_priv;
287 hostapd_interface_deinit(iface);
288 if (driver && driver->hapd_deinit)
289 driver->hapd_deinit(drv_priv);
290 hostapd_interface_free(iface);
291 }
292
293
294 static struct hostapd_iface *
hostapd_interface_init(struct hapd_interfaces * interfaces,const char * config_fname,int debug)295 hostapd_interface_init(struct hapd_interfaces *interfaces,
296 const char *config_fname, int debug)
297 {
298 struct hostapd_iface *iface;
299 int k;
300
301 wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
302 iface = hostapd_init(config_fname);
303 if (!iface)
304 return NULL;
305 iface->interfaces = interfaces;
306
307 for (k = 0; k < debug; k++) {
308 if (iface->bss[0]->conf->logger_stdout_level > 0)
309 iface->bss[0]->conf->logger_stdout_level--;
310 }
311
312 if (hostapd_driver_init(iface) ||
313 hostapd_setup_interface(iface)) {
314 hostapd_interface_deinit_free(iface);
315 return NULL;
316 }
317
318 return iface;
319 }
320
321
322 /**
323 * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
324 */
handle_term(int sig,void * signal_ctx)325 static void handle_term(int sig, void *signal_ctx)
326 {
327 wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
328 eloop_terminate();
329 }
330
331
332 #ifndef CONFIG_NATIVE_WINDOWS
333
handle_reload_iface(struct hostapd_iface * iface,void * ctx)334 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
335 {
336 if (hostapd_reload_config(iface) < 0) {
337 wpa_printf(MSG_WARNING, "Failed to read new configuration "
338 "file - continuing with old.");
339 }
340 return 0;
341 }
342
343
344 /**
345 * handle_reload - SIGHUP handler to reload configuration
346 */
handle_reload(int sig,void * signal_ctx)347 static void handle_reload(int sig, void *signal_ctx)
348 {
349 struct hapd_interfaces *interfaces = signal_ctx;
350 wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
351 sig);
352 hostapd_for_each_interface(interfaces, handle_reload_iface, NULL);
353 }
354
355
handle_dump_state(int sig,void * signal_ctx)356 static void handle_dump_state(int sig, void *signal_ctx)
357 {
358 #ifdef HOSTAPD_DUMP_STATE
359 struct hapd_interfaces *interfaces = signal_ctx;
360 hostapd_for_each_interface(interfaces, handle_dump_state_iface, NULL);
361 #endif /* HOSTAPD_DUMP_STATE */
362 }
363 #endif /* CONFIG_NATIVE_WINDOWS */
364
365
hostapd_global_init(struct hapd_interfaces * interfaces)366 static int hostapd_global_init(struct hapd_interfaces *interfaces)
367 {
368 hostapd_logger_register_cb(hostapd_logger_cb);
369
370 if (eap_server_register_methods()) {
371 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
372 return -1;
373 }
374
375 if (eloop_init()) {
376 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
377 return -1;
378 }
379
380 #ifndef CONFIG_NATIVE_WINDOWS
381 eloop_register_signal(SIGHUP, handle_reload, interfaces);
382 eloop_register_signal(SIGUSR1, handle_dump_state, interfaces);
383 #endif /* CONFIG_NATIVE_WINDOWS */
384 eloop_register_signal_terminate(handle_term, interfaces);
385
386 #ifndef CONFIG_NATIVE_WINDOWS
387 openlog("hostapd", 0, LOG_DAEMON);
388 #endif /* CONFIG_NATIVE_WINDOWS */
389
390 return 0;
391 }
392
393
hostapd_global_deinit(const char * pid_file)394 static void hostapd_global_deinit(const char *pid_file)
395 {
396 #ifdef EAP_SERVER_TNC
397 tncs_global_deinit();
398 #endif /* EAP_SERVER_TNC */
399
400 eloop_destroy();
401
402 #ifndef CONFIG_NATIVE_WINDOWS
403 closelog();
404 #endif /* CONFIG_NATIVE_WINDOWS */
405
406 eap_server_unregister_methods();
407
408 os_daemonize_terminate(pid_file);
409 }
410
411
hostapd_global_run(struct hapd_interfaces * ifaces,int daemonize,const char * pid_file)412 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
413 const char *pid_file)
414 {
415 #ifdef EAP_SERVER_TNC
416 int tnc = 0;
417 size_t i, k;
418
419 for (i = 0; !tnc && i < ifaces->count; i++) {
420 for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
421 if (ifaces->iface[i]->bss[0]->conf->tnc) {
422 tnc++;
423 break;
424 }
425 }
426 }
427
428 if (tnc && tncs_global_init() < 0) {
429 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
430 return -1;
431 }
432 #endif /* EAP_SERVER_TNC */
433
434 if (daemonize && os_daemonize(pid_file)) {
435 perror("daemon");
436 return -1;
437 }
438
439 eloop_run();
440
441 return 0;
442 }
443
444
show_version(void)445 static void show_version(void)
446 {
447 fprintf(stderr,
448 "hostapd v" VERSION_STR "\n"
449 "User space daemon for IEEE 802.11 AP management,\n"
450 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
451 "Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi> "
452 "and contributors\n");
453 }
454
455
usage(void)456 static void usage(void)
457 {
458 show_version();
459 fprintf(stderr,
460 "\n"
461 "usage: hostapd [-hdBKtv] [-P <PID file>] "
462 "<configuration file(s)>\n"
463 "\n"
464 "options:\n"
465 " -h show this usage\n"
466 " -d show more debug messages (-dd for even more)\n"
467 " -B run daemon in the background\n"
468 " -P PID file\n"
469 " -K include key data in debug messages\n"
470 " -t include timestamps in some debug messages\n"
471 " -v show hostapd version\n");
472
473 exit(1);
474 }
475
476
main(int argc,char * argv[])477 int main(int argc, char *argv[])
478 {
479 struct hapd_interfaces interfaces;
480 int ret = 1;
481 size_t i;
482 int c, debug = 0, daemonize = 0;
483 char *pid_file = NULL;
484
485 if (os_program_init())
486 return -1;
487
488 for (;;) {
489 c = getopt(argc, argv, "BdhKP:tv");
490 if (c < 0)
491 break;
492 switch (c) {
493 case 'h':
494 usage();
495 break;
496 case 'd':
497 debug++;
498 if (wpa_debug_level > 0)
499 wpa_debug_level--;
500 break;
501 case 'B':
502 daemonize++;
503 break;
504 case 'K':
505 wpa_debug_show_keys++;
506 break;
507 case 'P':
508 os_free(pid_file);
509 pid_file = os_rel2abs_path(optarg);
510 break;
511 case 't':
512 wpa_debug_timestamp++;
513 break;
514 case 'v':
515 show_version();
516 exit(1);
517 break;
518
519 default:
520 usage();
521 break;
522 }
523 }
524
525 if (optind == argc)
526 usage();
527
528 interfaces.count = argc - optind;
529 interfaces.iface = os_malloc(interfaces.count *
530 sizeof(struct hostapd_iface *));
531 if (interfaces.iface == NULL) {
532 wpa_printf(MSG_ERROR, "malloc failed\n");
533 return -1;
534 }
535
536 if (hostapd_global_init(&interfaces))
537 return -1;
538
539 /* Initialize interfaces */
540 for (i = 0; i < interfaces.count; i++) {
541 interfaces.iface[i] = hostapd_interface_init(&interfaces,
542 argv[optind + i],
543 debug);
544 if (!interfaces.iface[i])
545 goto out;
546 }
547
548 if (hostapd_global_run(&interfaces, daemonize, pid_file))
549 goto out;
550
551 ret = 0;
552
553 out:
554 /* Deinitialize all interfaces */
555 for (i = 0; i < interfaces.count; i++)
556 hostapd_interface_deinit_free(interfaces.iface[i]);
557 os_free(interfaces.iface);
558
559 hostapd_global_deinit(pid_file);
560 os_free(pid_file);
561
562 os_program_deinit();
563
564 return ret;
565 }
566